A Sense of Confusion

Derek Smith • 7 August 2021
an olympus mirrorless digital camera
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

by Derek Smith 30 July 2025
Last weekend we spent a pleasant Saturday in the north Lincolnshire Wolds. Our first stop was to All Hallows Church, Clixby, the church is very hard to see from the road, as it is hidden away among trees on a double bend. The church dates from the 13th century, is grade 2 listed, and was declared redundant in 1973. The stone carved font is 15th Century, and was formerly in a Low Toynton Church. Driving on to Caistor we stopped at the Rock Foundation Nursery, and café for an excellent coffee, and cake, for lunch. Returning home we pulled off the Caistor - Brigg Road to visit the hamlet of Somerby. A monument has been erected on the side of a hill here in 1770 to celebrate the 29th anniversary of Edward, and Ann Weston, and in the tenth year of the reign of George III. The views from here are amazing, clear across Lincolnshire to Lincoln. It was a pleasant excursion with my young lady, and my camera.
by Graham Harrison 28 July 2025
About a year ago, my computer crashed, and I lost all my files and photos. After learning from Curry’s that retrieval from the defective hard drive was costly and uncertain, I chose to buy a new desktop computer and start afresh. I had backed some of the older photographs up, with some club talks, and a lot of holiday photos on memory sticks. I had also been lazy about deleting photographs on my camera SD cards that went back to July last year. I decided not to use any of the old photos I had for competitions, and instead using only new images, essentially starting again. Downloading what I had on my camera and re-editing some I had worked on previously (hopefully better) as I had purchased the latest Adobe Elements (25) editing software on my new desktop, after losing my previous copy of Adobe Elements (10), and taking more photographs when I had the chance. I now have over 40 PDI's in my competition file but still need a few more in the print file as I like to print what I consider my best photographs; competition judges may have other ideas of course. Reviewing my last year’s monthly competition scores to May of this year, with Prints Subject - 3rd, Open-2nd, and PDI's Subject-3rd, Open-2nd, not bad considering that I started from scratch. Lessons learned then; firstly back your files up and don't let your computer get too old and out of date, secondly, I think it has been a good thing to start again and use only the latest photographs for competitions.
by Derek Smith 24 July 2025
As photographers we take many photos over our lifetime, personally I have over 30,000 photos, my photos of family, friends, and holidays are precious. A selection of my memorable photos of various subjects are pictured here and hold particularly fond memories for me. The first image is of Mam Tor at dawn, I and two other club members climbed Mam Tor in the dark by torchlight, to photograph the sun rise, unfortunately owing to the low cloud, and mist the sunrise disappointed, with just a lightening of the eastern sky, but we still managed to obtain some excellent images. My second image is of a London Docklands basin, this one processed as a monochrome image taken on a family outing, it looks stunning with the office towers, and the reflections in the water. Most of you know that I enjoy my portrait and model photography, this one staged at Doncaster Motorcycles, is gritty, and realistic. Obviously, she isn’t a motorcycle mechanic, but she entered into the spirit of the theme, and covered herself in dirt, and grease for the shoot. Lastly, a photo that I have longed to capture, you see photos like this in all the farming magazines. We were driving back from the Humber Bridge, through the lanes near Winterton, when I spotted the combine harvester in the field, we pulled up on a wide verge. I had to wait in the corner of the field until the tractor, and combine, were in just the right place so that I could capture the shot. Hopefully, you’ve enjoyed seeing these photos. If any members have any memorable photos that you can share, please email me.
by Graham Harrison 20 July 2025
Good Morning All I visited Chambers wood last Sunday in search of rare butterflies, I did manage to photograph a White Admiral and what I think is a Silver Washed Fritillary, it was a very bright day, and the butterflies were not settling for long. Last Tuesday four members attended the LPA Battle at Cleethorpes, Derek has done a blog on the evening to read on our website. Dave Turner has sent me a list of all the scoring over the three rounds which is attached, just be warned the scores on round three were quite low compared with other rounds. A big thank you to Dave Turner who has taken our prints to the away rounds and done all the administration for the Battles. It is our summer break now so the newsletters will not appear each week until September unless there is something to report. Feel free to send blogs to Derek if you have been somewhere you want to tell us about, or just a blog on anything photo related. Regards Graham
by Derek Smith 16 July 2025
The 3rd round of the LPA Battles was held last night at Cleethorpes camera club was held last night. The judge for the evening was Erica Oram, from Sheffield, I enjoyed her style of judging, very considered, and with her speaking out her thought processes as she assessed each print. The standard of prints from Cleethorpes, Louth, and Pinchbeck, in this 3rd and final round, were extremely high and Erica had quite a job to select the prints retained for higher points, her “hold backs”. I took this photograph of the “hold backs” at the break, about three quarters of the way through the initial judging, it was very evident then that Cleethorpes Camera Club had chosen a very creative, and well photographed set of prints for the LPA Battle. At the end of the judging process, Cleethorpes had 10 “hold backs” in the running for awarding higher points, accordingly Cleethorpes took first place in this round with 274 points, against 238 points for Louth, and Pinchbeck trailing with 234 points. Cleethorpes took a deservedly first place in this round, many thanks to Cleethorpes for the hospitality, making us feel very welcome.
by Graham Harrison 13 July 2025
Good Morning All Last week at the club we held a local PDI competition, Wildflowers and Open, there were some very good entries and especially well done to Keith Rossington who was placed first in both categories. The results are on our website. Thank you to Dave Turner who judged the Open, the first time he had judged live, and he did an excellent job with plenty of helpful comments and some good advice as regards processing our images. That was the last meeting at Church House until September as we now begin our summer break. There is however an LPA Battle, third round at Cleethorpes camera club next Tuesday, It is at 7.30 in their clubroom which is between 49 and 51 Reynolds Street DN35 7TU. Parking is best by the tennis courts. Regards Graham
by Derek Smith 10 July 2025
Last night we held our last competition before our summer break. The PDI (Projected Digital Image) competition had the categories of "Local Wildflowers", and "Open". As this was a members competition, Dave Turner judged the "Open" category, this was his first time judging a competition, he had previewed the images, and made notes, and he gave some excellent critique, which will help members when submitting images in future competitions. After the break, Graham Harrison judged the "Local Wildflowers", a couple of the submitted entries were excellent, but unfortunately did not meet the category criteria so lost some points, flowers always make a good subject for a competition, and Graham had quite a task in judging the images. It was a superb evening with some amazing images, Keith Rossington took first place in both categories, the images he submitted show how much time, and effort he takes with his photography, well done Keith.
by Graham Harrison 6 July 2025
Good Morning All Last Sunday I went to the Armed forces day at Cleethorpes, there were not so many people about as I think most wanted to see the Red Arrows on Saturday. There was an excellent display from a group of first world war re-enactors who were mounted and in the uniform of the Lancers as well as a limited air display the highlight been the Spitfire. Last week was also the run for life in Louth, Sam from Colorgrafix did the run in memory of Paul Malley and raising money for cancer research. Sam asked the club for sponsorship so we sent her a donation from us all. Last Friday 21 members and partners enjoyed a meal at the Royal Oak, Cawthorpe, it was good to be able to socialise with each other with a few drinks and a very good meal. I hope everyone had a great night. This week, Wednesday 9th July, we are holding a PDI (Projected Digital Image) competition, with the categories of "Local Flowers in Their Environment (25 miles limit)" and "Open". I am going to judge the Flowers with Dave Turner judging the Open. Regards Graham
by Derek Smith 3 July 2025
Most people are aware of “writers block”, where a writer sits staring at a blank page, and can’t think of a story to write, well photographers suffer from a similar affliction, with a camera sitting on a shelf, and we can’t think of anything to photograph. I believe that change in one way or another can invigorate our photographic creativity, one of our members renowned for his seascapes, has begun taking photos of birdlife, creating some stunning images. My favourite photographic genre has been in fashion and portraiture for the past 6 years, but I’ve lost the “joy” in the genre, so now I want to take more landscape, and macro photography, varying my style. I have just changed my camera system, and now I’m excited to try out the new lenses and watching endless YouTube videos to learn about the new camera system, as well as getting out, and trying the new techniques, these are some of the images from my new camera system. Another method of invigorating your photography is to start a project, think of a subject, and build a portfolio of images, watching how your photography improves as you take each image over time. Joining a camera club is another way to invigorate our photography. Many of our members have stated that their photography has improved since joining, being inspired by the talks, workshops, and regular competitions. The competitions are important both from a learning perspective, but also from the challenges in the subject matter. Recently I was dashing around trying to photograph “Wildflowers in the Environment” for our next competition, a lot of the roadside verges had been mowed reducing the wildflowers locally. Next, I tried some churchyards, there was some “Ladies Bedstraw” flowers in Scrivelsby churchyard, but it didn’t make for a convincing photo, I found some wildflowers along a footpath that did work. I did find another convincing photo in a local church yard, but still I had only two out of three photographs, and the deadline for competition entry submission was fast approaching. Driving out of Horncastle I spotted an ideal wildflower candidate, so quickly turning the car around, parking on the verge, and laying flat on the ground I was able to take one of the best images of the three, and with a lens that I wouldn’t normally associate with this style of photography. In conclusion, dust off that camera, take some photographs, and rediscover the simple joy of photography.
by Graham Harrison 26 June 2025
We had a really good turn out for the visit to Rimac last night and the weather was fantastic for taking wildlife photographs. There was plenty to photograph from moths and butterflies to many different birds, there were also plenty of wildflowers as well. I think we all took plenty of photographs so the competitions should have plenty of entries this year. We spent just over two hours photographing and walking round then some of us visited the Prussian Queen in Saltfleetby, where we were made to feel welcome and quenched our thirsts.