A Sense of Confusion
Derek Smith • 7 August 2021

Can I just start this blog with a very bold statement? A full frame sensor equipped camera is not necessarily “better” than a crop sensor equipped camera, yes, it will have improved dynamic range, and light gathering capability than a smaller “crop” sensor equipped camera, that is a simple fact of physics. In regards to photographic quality however, I do not believe that there is a competition judge in the world that will be able to tell the difference between a photo of the same subject, cropped to the same size, and taken on an smart phone, compact camera, a crop sensor camera, or a full frame camera, especially if the image is processed from RAW, thus negating any signature JPEG colour processing from the camera. A crop sensor camera, and a full frame camera will easily produce quality prints up to A3 print size.
Less weight, and smaller size are often given as advantages of using a crop sensor camera, but this is not universally true, a Panasonic G9 camera with a small crop sensor of micro four thirds is actually physically larger than a full frame Sony A7 iii. The Panasonic G9 measures 136.9 x 97.3 x 91.6mm weighing 658g, and the Sony A7 iii measures 126.9 x 95.6 x 73.7 weighing 650g, however my micro four thirds sensor equipped Olympus E-M5 iii does have a considerable size / weight advantage at 125.3 x 85.2 x 49.7 and weighs just 414g. It is the full frame lenses that weigh proportionally more, are usually physically larger, and can be more expensive because of the extra glass required to illuminate the larger sensor.
The effective focal length of a lens will vary according to the camera sensor size, a typical zoom lens range on a full frame camera would be 24 – 70mm, the 24mm wide angle giving a field of view of 73.43 degrees. An APS-C sensor is smaller than the full frame camera sensor, and a typical zoom lens would be 16 – 50mm, the 16mm wide angle giving a field of view of 72.59 degrees, this apparent reduction of focal length is known as the “crop factor”, therefore an APS-C sensor has a crop factor of 1.5. (or 1.6 for a Cannon APS-C sensor camera) A micro four thirds camera sensor is half the size of a full frame sensor, therefore the crop factor is 2, this gives a typical zoom lens of 12 – 40mm, the wide angle 12mm producing a field of view of 71.88 degrees.
So far, so not too confused, whatever camera sensor your camera is equipped with you will become accustomed to the most appropriate focal length to use in various scenarios.
Most photographers agree that a trio of prime lenses, a 35mm full frame, (equivalent 24mm APS-C, 17mm micro four thirds) 50mm full frame, (equivalent 35mm APS-C, 25mm micro four thirds) 85mm full frame, (equivalent 56mm APS-C, 42.5 micro four thirds) is ideal for most photographic situations.
Third party lens manufacturers, companies such as Tamron, Sigma, and Samyang have produced some stunning optics for various camera mounts. I used the Sigma 19mm f/2.8 lens on my Sony A6300 for a number of years with excellent results. The Sigma trio of excellent primes the 16mm f/1.4, the 30mm f/1.4, and the 56mm f/1.4, have been acclaimed by many photographic journalists, and are available in several lens mounts.
The real confusion sets in when a camera manufacturer uses the same bayonet mount fitting across the camera range of APS-C, and full frame cameras, this is the scenario with Sony cameras, and the “e-mount lenses”, and seemingly with Nikon and the “z-mount lenses”, a 35mm prime (fixed focal length) lens on the full frame sensor acts as a 50mm prime lens on the APS-C equipped camera. I used the Sigma 16mm f/1.4, e-mount lens, on my Sony A6300, and reviewed the lens on Amazon, and I have lost count of how many times I’ve been asked if the lens will fit on the full frame e-mount Sony A7, the answer of course is yes, BUT, the lens will act as a 24mm lens because the camera will default to “crop sensor mode” only using an APS-C portion of the full frame sensor.
It is no wonder then that many photographers are confused by the range of lenses available for the various lens mounts, and sensor sizes.
Louth Photographic Society

Our speaker last night was the highly talented Mike Bennett, he presented the club with some amazing photographs. For the first half of the presentation he showed many portraits, with the backgrounds skilfully changed, and several composited images. Included in this first half were many travel photos from Serbia, many of the buildings showing the scars of the civil war, photos from Budapest, and Austria. His wildlife photos of pelicans taken at Lake Kerkini in northern Greece were amazing, even though the weather wasn’t all that favourable, and that completed the first half of the evening. After the break, Mike showed us his wildlife photos from the game reserve in Eswatini, (bordering South Africa). The bird photos were very sharp, many of the species such as the Rollers, Vultures, and Ibis are only to be seen in Africa, Mike explained the four “F’s” of bird photography, Flying, Fighting, Feeding, and … yes you’ve guessed it being Friendly. Various other animals were shown, lions, crocodiles, rhino, elephants impala, and warthogs. It was interesting to see the extreme close-up photographs of the rhino, and elephants, as Mike explained those animals are big grey lumps, and sometimes a more interesting photo can be an extreme close-up detailing the skin texture. Mike related how their safari vehicle became held up by a herd of elephants on the track ahead, then a big bull elephant passed behind the vehicle close enough to touch, but of course the group of photographers had to sit absolutely still, until the herd of elephants passed. I was most struck by the photos of the cheetahs, with the photographers walking amongst them!! my favourite from this set was of the cheetah walking up the track pictured on a rise against the sky. The editing, sharpness, and colours from Mike’s photographs was very impressive, it was an extremely good presentation, many thanks Mike.

Good Morning All We have just got back from a week staying at Sedbergh, Cumbria. We had varied weather but not too much rain and some really good light for taking photographs. There is no shortage of water up there the rivers and waterfalls are flowing well. Last week at the club Harry Kerman gave a talk on one of his favourite subjects, flowers. I was not there but going by the blog Harry demonstrated how he goes about taking his photographs with some stunning photographs to show what can be done. This week, Wednesday 5th November, Mike Bennett from Cleethorpes will be our speaker, Mike likes to tell a story with his photographs and seeing some of his talks before it will be an excellent evening. Today, (Sunday) it is the LPA PDI club competition at Nettleham village hall near Lincoln. 1.30 pm for 2pm start. If you have nothing on this afternoon why not go along and see how we get on. The week after (12th November) we hold a series of mini lectures, with this year's club outings as the topic. If you would like to take part, email me please and I will see how many members want to take part. Harry is also taking entries for this year's PDI of the year, all the rules are on our website but any image that has not been in a PDI of the year before and there are six subjects with a maximum of six photographs in all. Closing date is 12th November. Regards Graham

At our meeting last night one of our members, Harry Kerman gave a talk on one of his favourite genres, flower photography. Harry's talk was accompanied by a slick, professional standard power point presentation, he also had his camera a Canon R6 II, a Sigma 105mm macro lens, a Lens Baby 56mm manual focus lens, and the standard 24-70mm zoom. Harry demonstrated his use of the equipment, which included backgrounds, a plamp to hold flowers in place, and a light box. After the break Harry presented some of his images, projected onto the screen, not all the images were "perfect" he wanted to show some of his mistakes so that we could learn from them, he also welcomed feedback from members, all of the flower images he showed were stunning, and you can see some of them on this post. It was an inspiring evening, providing many techniques, and creative ideas for members to emulate. Harry's passion for flower photography shone through during the whole talk, his clear narration, power point presentation, demonstrations, and images completed a very successful night. Thank you Harry for a fascinating evening, and to Richard Hildred for the refreshments during the break.

Good morning, All Last week at the club we held a retro night, with four members showing pre year 2000 transparencies. It turned out to be a really interesting evening, I didn't know Richard Hildred had started out at an early age photographing trains, it turned out himself and member Chris Birchmore were travelling on the Flying Scotsman in 1967 at the same time. There is a full report on the evening on our blog. This week, Wednesday 29th October, Harry Kerman, one of our members will be showing some of his projected images, and talking about his interest in flower photography. Don't forget Harry is now taking entries for our PDIOTY (Projected Digital Image Of The Year) competition. (closing date 12th November) Regards Graham

Last night was a nostalgic trip down memory lane, with four of our members presenting a slide show taken before year 2000. Now we all remember sitting in a darkened living room showing your latest holiday slides to friends, and neighbours, that click and whir as the slides changed, the stuck slide, the one that was upside down, or back to front, and uncle Jim dozing on the settee! It wasn't quite like that for last night's presentation, Richard Hildred began the evening with some amazing images of railways from British Rail days, we might ride one of the preserved heritage lines, and see the gleaming clean steam engines pulling a line of carriages, Richard's images returned us to the reality of steam powered passenger and freight operations, with the dirt, the grit, and grime of daily steam running, this image captures the essence of steam hauled mixed goods traffic, Richard's slide was in colour, but renders better here in monochrome. Next up was Tony Gaskins, many of his slides featured his first trip to the Maasai Mara game reserve, and the Ngorongoro Crater, Tony also showed slides from his trip to Canada, his slides and narration made for a great presentation. This image of a mother elephant, and calf was taken in the Ngorongoro Crater. After the break, Chris Birchmore presented many images from the Lincolnshire area, some of the disused, and crumbling buildings in the images made interesting subjects for photography, I have used this image of Bolingbroke castle, and from this viewpoint the church is clearly visible in this image, compared with today where only the church tower is visible. Graham Harrison was our last presenter, last but not least, the variety of images shown was remarkable, several from Wales, and quite a few that had been entered into club competitions previously, and were of high quality, as this image of a Flamingo shows. It was a fascinating, and interesting evening, thanks to each of our presenters, and to Dave Mann for the refreshments.

Good Afternoon, All, Last week at the club we held our monthly print competition, with the categories of "Mono" and "Open", judged by Diane Seddon. It was a very good evening with Diane critiquing our prints with helpful comments on how we could improve our images as well as praise. The results are on our website but well done to David Whitehouse for best print in the mono and Dave Turner for best print in the open. This week, Wednesday 22nd October, we go back in time to before the millennium with transparency slides to be shown by Tony Gaskins, Chris Birchmore, Richard Hildred and myself. You can start sending Harry your entries for the PDI of the year, all the rules etc are on our website, but the important thing is you can enter any PDI's as long as they have never been in a PDI of the year before. There are six subjects and an overall max of six PDI's, no more than three per subject. Regards Graham

A print competition was held last night with the categories of; "Monochrome" and "Open". Diane Seddon from Cleethorpes Camera Club was the judge for the evening, Diane is very skilled, and thorough in her judging, providing useful insight, and critique of the prints. Many of her comments centered around the best cropping of an image to optimise the subject within the frame, and giving the subject "room to breathe" in the framing. Congratulations to David Whitehouse placed first in the "Monochrome" category, with his superb rendering of a face sculpture, and Dave Turner placed first in the "Open" category with his stunning print of the sunrise over Whitby Harbour. Thanks to Diane Seddon for a great evening, and as she remarked at the end of the competition all the prints were of an extremely high standard. The Competition Page has been updated with the highest placed images, but currently the score sheets for the competition are unavailable.

Good Morning All Last week Dave Bennett came to the club again, it has been a while since we have seen his photography but well worth the wait. Dave's photographs were excellent and his story telling along with AV's made it a very good night. This week, Wednesday 15th October, we are holding a print competition, with the categories of "Mono" and "Open", our judge for the evening will be Diane Seddon AFIAP CPAGB BPE3* she is well qualified to judge our prints. The following week we are going to try a retro night again, with Transparencies taken prior to the year 2000, please let me know if you want to take part and have a time slot allotted, time will depend on the numbers wanting to take part. Regards Graham

Last night Dave Bennett came to the club to show us AV's and narrate other sets of photographs on a theme. Dave started with photos along the Humber and then carried on the evening with AV's on nature, flowers and transport as well as talks and photographs showing us Grimsby docks including detailed photographs of fish smoking and engineering. Dave's photography is of a very high standard with strong colours, lot's of use of depth of field and they tell a story. A great night, thank you Dave.

Good Morning All Last week at the club we held a local PDI competition with a category of "5 Minutes From Your Home", we had some very good entries in each category with myself, and Dave Turner judging on the night. All the results are on our website, but well done to Derek for his mobile phone picture of a remembrance seat in Horncastle and Harry for his hellebores in the "Open" category. This week, Wednesday 8th October, Dave Bennett is coming to the club to show us what he has been taking lately, Dave does quite a bit of AV so as usual it will be a very good night. A reminder, send your print titles for the next print competition to Dave Turner by midnight Wednesday and bring your prints in this Wednesday night as well please. If you have any more N&EMPF Exhibition PDI entries send them to me by midnight tomorrow (Monday) please. Regards Graham
